Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Dumfries, Gold-Pyrite Belt, Prince William Co., Virginia, USA

mindat Locality ID: 255447
mindat URL: http://www.mindat.org/loc-255447.html

Tectonic Settings:

Total number of sublocalities beneath "Dumfries, Gold-Pyrite Belt, Prince William Co., Virginia, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Cabin Branch Mine (Dumfries Mine)

Latitude: 38°34'29"N
Longitude: 77°20'53"W
Decimal Degree (lat, lon): 38.574722222222,-77.348055555556

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amphibole	Calcite	Chalcopyrite	Clinozoisite	Copiapite	Copper	Epidote	Gypsum	Melanterite	Nickeline
None	Not in a structural group	Pyrite	Quartz	Rocksalt	Sphalerite	Spinel	Tourmaline

Actinolite ()*	Calcite ()*	Chalcopyrite ()*	Copiapite ()*	Cuprite ()*
Epidote ()*	Galena ()*	Gypsum ()*	Magnetite ()*	Melanterite ()*
Pyrite ()*	Pyrrhotite ()*	Quartz ()*	Schorl ()*	Silver ()*
Sphalerite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al B C Ca Cu Fe H Mg Na O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Calcite Chalcopyrite Clinozoisite Copiapite Copper Epidote Gypsum Melanterite Nickeline
None Not in a structural group Pyrite Quartz Rocksalt Sphalerite Spinel Tourmaline

16 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	1	282328	3419
Calcite ()*	Calcite	Ca(CO₃)	1	282328	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	1	282328	27198
Copiapite ()*	Copiapite	Fe²⁺Fe³⁺₄(SO₄)₆(OH)₂·20H₂O	1	282328	382
Cuprite ()*	Not in a structural group	Cu₂O	1	282328	2970
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	282328	8173
Galena ()*	Rocksalt	PbS	1	282328	24243
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	1	282328	6890
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	282328	14899
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	1	282328	915
Pyrite ()*	Pyrite	FeS₂	1	282328	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	282328	9056
Quartz ()*	Quartz	SiO₂	1	282328	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	1	282328	2705
Silver ()*	Copper	Ag	1	282328	5186
Sphalerite ()*	Sphalerite	ZnS	1	282328	21482

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...